Nut-lock



S. PAJEWSKI.

NUT LOCK.

APPLICATIQN FILED FE8.23, mm.

1. ,'392,209. PatentedSept, 27,1921.

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Stephen .Pajewka INVENTOR S. PAJEWSKI.

NUT LOCK. APPLICATION HLED FEB. 23, 1921- 1,392,209. PatentedSept. 27, 192i.

2 SHEETS-SHEET 2.

WITHIN! Stephen Pajem l UNITED STATES P NT OFFICE.

STEPHEN rA 'Ewsxr, or Neurone, PENNSYLVANIA I Specificationof Letters Patent.

Application filed February 23,1921. Serial No. 447,117.

and useful Improvements in Nut-Locks, of,

which the following is a specification.

This invention relates to improvements in nut locks and has for an object the provision of a nut which may be locked to a bolt in a manner to prevent its accidental removal, yet permit of'the removal of the nut when necessary or desired. 5

Another object is the provision of a nut lock of the above character which is simple in construction, positive in operation and which may be easily and quickly adjusted to or removed from a bolt.

With the above and other objects in view, the invention further includes the following novel features and details of construction,

to be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims".

In the drawings Figure 1 'is a view of a bolt with the improved nut lock in position thereon.

Fig. 2 is a similar view showing the parts in position to permit of the removal of the nut.

Fig. 3 is a longitudinal sectional view on the line 3-3 of Fig. 1.

Fig. 4 is a similar view on the line 4-4 of Fig. 2.

' Fig. 5 is a section on the line 5-5 of Fig. 2.

Fig. 6 is an end view ofFig. 1.

Fig. 7 is a detail perspective view of the nut.

Fig. 8 is a similar view of the locking ring.

Fig. 9 is a like view of the dog and its actuating plunger.

Referring in detail to the ,drawings wherein like characters of reference denote corresponding parts, the reference character 10 indicates a bolt of suitable size having one end threaded for the reception of a nut, the threaded end of thebolt being provided with a transversely arranged opening 11.

at one end With an annular flange 14.

. Patented Sept. 27, 1921.

The body portion :of the nut is provided with an; elongated" slot '15, having/at one; end .a substantially circular recess 16 and having its opposite end in :connection with a circular bore 17 which ex tendsdiametrically through the nut. The

slot 16 is adapted to receive a dog 18, the latter having at one end a tooth 19 which operates within the recess 16 for enga ement' in the opening 11 of'the nut. Slida 1e within the bore 17 and secured to the dog 18 is a plunger 20, one end of the plunger having an enlargement or head 21 which engages the outer periphery of the nutbody 13. The opposite end of the plunger 20 is positioned adjacent the dog 18, while interposed between this end of the plunger and the said dog is a spring 22, whose function is to urge the dog outward.

In order to hold the dog against accidental outward movement, there is swiveled upon the nut 12 within an annular roove 23, a locking ring 24. This ring is a apted to overlie the recess. 16 so that when the dog is depressed with its tooth 19 engaging the opening 11 of the bolt, it will be held in such depressed position. In order to permit of the removal of the dog, that is, the removal ofthe tooth 19 from the opening 11,the locking ring 24 is provided with a notch 25, which may be brought into register with the recess 16 so as to permit of an outward movement of the dog. Interposed between the nutand the dog is a spring 26, the purpose of which is to prevent accidental rotary movement of the dog 24.

In positioning the nut, the ring 24 has its notch 25 registering with the recess 16, so thatthe tooth of the dog 18 is prevented the nut has been properly adjusted, the

dog 18 is depressed and the locking ring 24 given a half turn, whereuponthe tooth of the dog will be held in engagement with the opening 11 of the nut, while the spring 26 will prevent accidental'movement of the locking ring. To remove the nut the looking ring is rotated until the notch 25 registers with the recess 16, whereupon the plunger 21 may be operated to force the dog 18 outward and thus aid the action of the spring 22. a

The invention is susceptible of various changes in its form, proportions and minor details, of construction and the right is herein reserved to make such changes as v I properly fall WlilhlIl the scope of the appended claims.

Having described the invention What is means for holdingthe dog in'engaged position.

2a The combination With a bolt having an opening therein, of a nut threaded thereon and having an elongated longitudinally disposed opening therein, a radially movable for engagement in the opening in the bolt, movable means for holding the dog in engaged position andmeans carried by the nut for disengaging the dog subject to the position of the dog holding means.

In testimony whereof I'aflix my signature.-'--

- 7 STEPHEN- PAJEWSKI.

dog positioned in said elongated opening 

